The World Malaria Report 2011 summarizes information received from 106 malaria-endemic countries and territories and from malaria control partners. It highlights continued progress made in malaria prevention and control. International funding for malaria control rose to US$ 2 billion in 2011 but still remains significantly below the amount (over US$ 5 billion) that would be needed annually between 2010 and 2015 to achieve global malaria targets. The number of long-lasting insecticidal nets delivered to African malaria-endemic countries increased from 88.5 million in 2009 to 145 million in 2010, raising the percentage of African households with at least one mosquito net from 41% to 50% during the same period. Indoor residual spraying protected 77 million people in 2010, or 13% of the population at risk. There was also continued progress in rolling out parasitological testing. In the WHO African Region, 42% of suspected malaria cases in the public sector were confirmed with a diagnostic test, compared to less than 5% at the beginning of the last decade. In 2010, 181 million courses of artemisisin-based combination therapies were procured, up from 158 million in 2009. The report also carries updated information about drug and insecticide resistance, warning that control efforts should proactively address both of these challenges. For the first time, the annual report includes country profiles for all 99 countries and territories with ongoing malaria transmission.